Greetings:

I'm finally getting around to doing heads/cam/longtubes on my C5 FRC.
I'm buying everything used, if I can. Anyway. I have the choice (right now anyway) to purchase a set of MTI 2E heads that will be "freshened" by the technician who owns them, or buy a set of Precision Porting and Coatings Stage 3 heads with only 2500 miles on them The MTIs are LS1 heads, the PP&Cs are 6 liter milled to 58cc combustion chambers.


MTI Stage 2E Cylinder Heads
hand porting of intake, and exhaust
major bowl work performed.
Ferrea 2.02" & 1.56" valves, factory valve seats.
High performance dual valve
lightweight titanium retainers
specially machined spring cups

PP&C:
Combustion chamber for maximum unshrouding
Chambers cc'd
Coat chambers and valves
Oversized stainless one piece intake and exhaust valves
Flow balance runners to within 3%
New valve springs


Total mods are:

Z06 intake, plenum, bridge and intake manifold
heads
Z06 timing chain
upgrade oil pump
underdrive pulley (if I get lucky)
224 224 .581 .581 112 cam
LG street longtubes
3.90 rear gears

The purpose of the mods is to provide more street performance with a minimal impact on driveability, more "squirt" with the 3.90s which will also give me a more usable MN6.

My question: which head makes more sense very used and "freshened" MTI or 2500 mile "used" PP&C LQ9 head?

Thanks, Gentlepeople, and Regards,

Garibaldi