1100 dollars is what? 700 quid? 800 quid? That is about right for a set of forged pistons im afraid. Well you get a 2.3 Haynes Manual and a Pinto Haynes Manual, they will have big end and main diameters so you can compare them, if you do a dummy build use plasti gauge to tell you if they are a good fit, it comes in little strips, you put it on lets say, the big end and bolt a rod onto it, then release the rod and the pasti gauge will have spread out, it comes with a measurement chart to show you if it's alright. But if i'm honest if you're going to Turbo it, use the H beam steel rods (if thats what CAT are)