Welcome Chuck, it's great to see people keep the old inline sixes in their trucks. I'm still building mine but it has the six with the old 420 4 speed. I hope you like it here; I'm sure you will.
What is a 420? I'm looking for a 235 to replace my 216. my 216 has a crack under the 6th cylinder. Water leaks out very slowly and I'm just waiting for the crack to get to long.
thanks.