10% faster ?

[totta Crolla]

If I can make my '86 10% faster I reckon I can have a good competitive car in my class.
The regulations for non homologated rally cars in the U.K allow for pretty much any modifications so to come 6th in class in a fairly standard car is a good start.
Money is tight right now but I have accumulated some parts over the years and I will list them together with the car specs. so maybe you could tell me what you think I should use.

I would really like to find a cheap GRP bonnet by the way !

Parts shown with a * are not yet fitted.

Fibreglass tailgate with perspex window *
Fully stripped out doors but no perspex yet *
All interior still fitted to car but Sparco seats and belts.
Heater to be retained
Smallport engine fitted using Bluetop ecu and sensors. Modded smallport inlet manifold. Stock airfilter. Tubular exhaust manifold and competition exhaust system.
Twin 45DCOE weber carbs, ready to fit with linkages and manifold etc *
CATCAMS 264in 260ex 9.5mm lift cams with underbucket shims *
HKS valve springs *
Cusco MFE ECU *
Freedom ECU *
Superchip ICON programmable ignition piggyback *

The Superchip Icon can allow ignition timing adjustment to the Cusco or stock ECU If I "lock out" the stock distributor to use it with the carbs.

Please also keep in mind that the car is used for tarmac rallying and the car that won my class over the weekend on one of the fastest rallies of the year was a 200hp 850kg Civic. It came a very creditable 2nd overall in icy conditions.

10% is a lot I know but I would like to do better than 6th in class !!

The car handles nicely and has plenty of grip and that is due mostly to the help and advice given by people on here so I thank you all very much.
Cheers, TC