The piston side...

That seat popped out after about 2000 miles.....

I would not and will never buy another set of aluminum MP heads without replacing the seats as a MANDITORY requirement.....

Saving 200 bucks cost me 8 grand.....You still wanna take that chance? I know what I would have done had someone warned me....

Here is a hint that the "trouble" is on it's way....
IF you have a valve tap that comes and goes...SHUT IT DOWN AND GET THOSE FREEKIN HEADS OFF THAT MOTOR ASAP!

OH...and all those pieces....took out 4 other cylinders...I was lucky I didn't have to sleeve the block...but now I'm .060 over on a block that has about 20,000 miles.