[EarlsflyinCobra]

Fred,
Here is a post another member put on a thread I started, I am wondering the same thing you are? Hope someone gives us the right answer......Earl


Hi,
I ran an '87 LX coupe with a TO4B 15 years ago now.
The worst thing is the wimpy 7/16" head bolts, you'll blow head gaskets. While you have the engine at the machine shop to get bored, get them to drill and tap the head bolt holes for 1/2" 351 head bolts. You can torque the heads down to 95 lbs instead of the 70 for a 302. Small port heads are fine for a turbo as it will blow air right through any restriction.
Perry.