Start by getting all the bolts for the plenum, yes that can definitely cause a big vacuum leak.

I ordered my 1/2 plenum spacer soo everything should be good to go when that comes in my test pipes are also on the way and I already received my headers and bigger injectors for the e85 tune later. I think once the plenum is tightened down she will run like a charm ready for her tune. My next purchase is my fuel pump then continue to make her pretty.

it was definitely the vacuum leak i got the bolts from the junkyard real quick bolted the plenum nice and tight broke the mid plenum nut in the process which sucks *** but ill fix that I noticed the oil catch can breather breathing soo im hoping that means thats working I hope that wouldn't cause a vaccume leak too ill post up a video bro but thank you for being here thru this process and remember anyone who sees this thread check for vaccume leaks always eveeytime you remove **** check for a vac leak if your getting p0300 and just that code.