Speak to aidrian at a&b garage in hawerden, north wales. they specialise in DTA and are always mapping rally cars which use itbs or carbs.

167B Castle Close/Manor Lane, Deeside CH5 3QX

Phone: 01244 537 701

Hope this helps

p.s. im building a st170 on the same bodies but using megasquirt as it apparently hase much better features for using itb's