I just had mine rebuilt this past season. Cost me about $350 including, block cleaning, compression test, leakdown test, new pistons & rings, and 4 new valves.
I did not have to replace my clutch tho.
I actually burnt up two valves and had lost all compression in cylinder 3.
I don't know about shops in oregon, I do all my own work. You might not need a rebuild. Find out what is wrong or causing the problems and go from there. My 15b7 smoked when i got on it after I took my catalytic converter off. Maybe it was just running a little rich, i don't know the engine ran fine. after i put the cat back on there was no more smoke.