So, I just got my 1979 orange Toyota pickup with a 20R four speed manual. But the head gasket went out and I replaced it. But know I can't seem to get it to idle and I think its because I broke the bvsv valve on the bottom of the intake manifold. My question, I see a couple of bvsv on ebay. Which one can I use? I'm not sure which model if any I need. I tried bypassing but it still won't idle. Just reves then dies.