Hello.hope om posting on the right place. I have a fwd cadillac 4.5 pfi engine trying to run it on a 90 c1500 305 ecm.7747.obviously it is not the same and I'm having timing issues. I've read the timing table of curved ate completely different. I've done a few logs with tprt and see a few things off.my question is do I get the burner and chips and do the socket mod to attempt a correction or am I farther ahead to swap to 7427 ecm and run pfi as that's what the engine was designed for. Currently running the tbi set up in a s15 jimmy using the stock 2.8 harness.any advice would be great.may not have given all the details but I hope enough to help choose a direction.thanks