main thing to do is to actually rebuild a CA. due to there age and willingness to spin big ends its always a good idea to atleast have everything meaured up and cleaned so you know what your dealing with

ive had 2 CAs now that have spun big ends for no apparent reason apart from waning to annoy me just as ive finished an engine conversion. both ran fine before going in the car and then for a short time in the car

but once you have something you know isnt going to die straight away it should be more than enough fun with just turbo injectors AFM and a tune