Well I finally am rebuilding the yellowbrick's engine. Got a 74 k-jet used that looked like it had clean bores. Took it apart & honed the block to clean it up. It came out to 3.505 as measured with my NSK dial caliper[Iknow it's not a bore mic. but it's close] It looks like I've got too much piston to block clearance though[an .008 feeler gauge fits between pistons & block] It's at the machine shop now to see if my measurements are accurate. It will probably need to be bored .010 over & need new pistons [DAMN] I've got total seal rings ordered & the crank measures out fine for std. mains & .010 under rod bearings. I'm going to have the block decked to cut down thw "squish" area & have everything balanced & the flywheel lightened. I can't really decide on a cam though. I've got 3 choices: 1. stock D grind [the one in there is like new], 2.IPD street torque cam[Ihave one lying around], 3. one of J. Parkers street performance cams, [Or 4. ?] So I'm soliciting opinions on choices either pro or con. The head is an f injected & I've got 37mm exhaust valves to install. The guides are bronze & I've gasket matched the exhaust ports. Any opinions on taking down the floors of the exhaust ports a little on the valve side? I've got a swedish 4-2-1 header on there now that I'll port match to the gasket & head & a 2.5 inch exaust with a flowmaster muffler.
On another note is the .030 of the gasket enough clearance to avoid valve hit & should the sharp edges of the combustion chamber be rounded to avoid detonation? Also does anyone know if lighter pistons are available [and worth it]? Thanks for all opinions in advance. [By the way it's a 72 145e]

Mike M.