Oh yeah, what should I be doing to the existing TB, think I read something about grinding the lip off and polishing it, is that right or am I in the wrong section again?

I've got a pipercross viper on my track car. I wouldn't pay new price for one, just buy a second hand one for £40-50 and a cleaning kit, give it a good clean and use that. I like my filter but most of them do the same job really.

Consider making your own plastic side windows yourself, get some 3 or 4mm thick lexan, remove a glass window and draw round it, go round that with a jigsaw then tidy up on a linisher if you're fussy with finish then mount in the car. Rears are easy as you can rivet or use countersunk screws and nylocs like i did. For the front i made some alloy 'L' brackets to hold the windows up in the seals, then a few capscrews along the length of the bottom pushing the lexan into the water sealing strip.
For a more oem look i used some very light window tinting film on mine so the car is less of a fish bowl to look at.

Other than that it's not too bad of a list. I'm assuming you've already got an oil cooler?
I found running ducts from the foglight holes and aiming it at the back face of the discs/calipers made a big difference, might be worth considering.

There are quite a few decent track car project threads in the project secion, if you haven't done so already have a nosey through them for inspiration.

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Goldie the track car.

Yeah going to pull out the entire A/C system. Boot seems like best place for battery to aid a little with corner weighting. Already have a cage and front lower and upper braces. Obviously all the basic stuff is done weight wise, everything is out, sunroof deleted, haven't taken the angle grinder to it yet though. Need to get the dash out and pull all the weight from behind there.

Running AD08'r on C5 Steelies and have run ducting from fog light holes back to discs which are black diamond 6 grooves with ds2500 pads. Still finding an incredible amount of heat in the wheels though. First time I ran it after replacing the Cyclones I melted the powder coat but it's well and truly cured now! Cannot touch the wheels after a run absolutely baking hot, even on a light braking circuit like Brands Hatch Indy.

Thanks for the help guys think I will plough on along those lines. Far too lazy to make my own windows but I think spoox do them for around 220, probably worth it to get all the crap out of the doors.

One think that struck me was the assumption that I have an oil cooler. I don't but on a hot day driving as hard as I can for 20 minutes, I'm not getting over 120 degrees with some fancy 10/60 oil made to perform at higher temps. I figured it was just a good 'un and ignored it! Do I need to get that done.

C5 steels are not good for brake cooling. Had the same issue with pretty much the same setup. Ended up using different wheels and brakes anyway.

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Nothing to see here

Another option for windows is http://www.acwmotorsportplastics.co.uk/peugeot-306-3dr.html

I tried making my own windows but they were a bit s**t so will be replacing them soon

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Rallye Race Car

Yeah they do, especially on the rear which can be a big issue I find.

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Nothing to see here

It's like Sky Cycling innit! Marginal gains for overall improvement! I'm hoping to win the Tour de France in it next year.