A little something special for the 700 and 750 crowd: clean 700 heads still sporting the Yamaha grey paint (for the 750 this bumps compression from 9:1 to 10.2:1); 3-angle valve jobs; rehabilitated used valves culled fom piles of those that could not be re-used; Viton valve guide seals; usable adjusters; jam nuts that aren't rounded off, and quality bearings to replace those stupid aluminum bushings on the drive-side of the cams. The size of the intake ports is sufficient to accomidate either TM34 flat-slides, or VM34 round-slide carburetors, so there is no need to fiddle with them. The ports and combustion chambers will be blasted to remove carbon. Reckon on $300 exchange if you send me 700 heads. It's $425 outright if you have a 750; I don't want your old heads. I've found that the exhaust valve for the 920/1000/1100 fits on these seats and it is 2mm larger. If you would like to run these valves, the port must be enlarged slightly where it meets the seat. No premium for the valves, but the labor raises your total by $50. If you want the intakes expanded to fit a TM38 or a VM38 and polishing the exhaust ports, figure on another $100 .