okay so ive heard alot about turboing a 420a and how its not good as a GST. i know all about it. anyways i know the basics about installing the turbo, pre and after tuning, how much psi the head can hold, and to have a good mechanic if i need any help.i just need some help on the specifics and if anyone knows any how tos on this. thanks [align=right][/align]

 

If you have to ask the question, you shouldn't be doing it.

 

Please DO NOT double post stuff, and also dont write in Huge letter.

You cant run more than 8psi off the stock motor, and your head gasket will be guarenteed to go no matter what so you might as well prepare for replacing that and upgrading to an MLS head gasket even before you put a turbo on.