Here's a little quick info
T3/T4- 45 year old design, thrust bearing's don't like high PSI for long.
Physically big for the flow size
Won't fit your car without a custom header,downpipe, chargepipe, oil drains,oilfeeds.
It really boils down to what kind of $$ you have to battle dad.
If you got around 4K to spend you'll be able to score 400ish whp after a little screwing around with the tune. I got the goods fer ya!
That should easily handle a bonestock C6.
But- you think your old man's gonna let that slide?
First time my vette handed my old man his arse, (he's got a s-10 with a BIIIG blower) he pulled it down changed the cam and pullied the sucker for 20psi. Pissing contests as my mom likes to call it, will never end no matter how old you& your dad get.
Keeps ya close, at least in my family.
As a tuner, one of my favorite things is getting a group of friend or a family that's into cars. As soon as I upset the powerbalance within their click, I got the whole lot of them beating down my door.