I'm in the same boat with likely at least 2 bent valves. Race Engineering also sells valves to suit the RB25. "eh?" has found that the z32 lifters, collets, and retainers have the same part numbers as the ones for the RB25 so it should work. I don't have the time to do it but it wouldn't be too difficult to order one set of z32 valvetrain parts and compare them to the RB25. I priced it out last week and it comes out to less than $20 (
www.mynismo.com)
BTW, if you have any UNBENT intake valves you would like to donate to my cause, I'd be really grateful!