top end rebuild, fair quote? Options

[TROJANMAN]

my mechanic has been nice enough to store my car for the last year. but with spring around the corner, i realllly want her back. i haven't had it fixed yet, because i can't justify paying him the $2,800 he has quoted me for the repair bill. the engine froze last year (after a valve adjustment he performed). the cause of the problem was a loose valve seat which dented the head. he said these things just happen. ironically, there was another 75 with the same problem, but worse damage i saw there yesterday. now i need to have the heads re machined and the valve seats replaced. Does $2,800 sound fair for this job? he is a true porsche mechanic, and races a 914/6 himself, so i trust he knows what he is doing. thanks in advance.
the rest of the car is mint - considering its age, just some fading on the interior. it's a '75 2.0

[Bleyseng]

there is 85k+ miles on this engine with the hotter 75 emissions crap on there, you would be a fool not to open the bottom end to check the wear. My bet is most of the parts will be marginal and should be reworked.

The big question is "Who is rebuilding the heads???" This Porsche mechanic? Hmm, I would send them out to Headflowmasters to eliminate the dropped valve seat problem.
Plus, they drop out due to the engine overheating.
Why is it overheating? Fix that problem now!
Is the MPS the right one or miscalibrated?
Still running the crappy later style heat exchangers, change them out to the early style.

Dave Darling has fought the dropped seat problem twice so it is time to solve that before tossing more money in the engine.

Geoff (IMG:style_emoticons/default/blink.gif)