Fev..
how much of a ford man are you ? are keen are you ? there are so many options - a simple conversion is a 2.3 turbo out of XR4i - bolt straight in, use the gearbox you already have..
you can get turbo kits for the pinto or go the cossie
have a look at swanny's
http://www.fordforums.com.au/showthread.php?t=11250297