I am trying to build a TBI set up for my Buick 225 oddfire. I was hoping someone here could be able to help me. I am needing a crank trigger to run off the balancer in order to get a good signal for the computer. I have seen other people use the MSD 8630 but I am having no luck finding this. I am told I need one from a 231 evenfire. I can't use the signal from the dist. because the oddfire signal confuses the computer so was hoping that using a crank trigger would give a more usable signal for the computer. So is there any other options for crank triggers other than the MSD 8630 that isn't made anymore?