Update: (and the weekend hasn't even started... well, it has...)
Beer 1.
So on my floor is this conglomeration of parts and I've got the general idea of what I'm gonna do. I'm sitting there, having a beer and decide to start on the bitter work.
By Bitter work, I mean sitting things in just the right places & really thinking this out because everything has to fit just right... I'm gonna tack weld tomorrow.
While looking through my little shop for a few c-clamps, I kick a box under the bench and something falls on the floor. It's one of those cheap-sh1t disc rotors from somewhere... and where should we put this I say? See Pic 1. See 'Sid? No magic shed with witches in it. (it's a magic box in the nether-reaches under a scary shelf)
Snap that pic and move on.
So I sit the engines back in place and drop an axle on top of it all. Sure enough, it was as I feared. We're gonna need a fricken 40" axle and I don't have one. A 38 is all I have... and the front end is good with a 38 in the back too. I go much wider and it's gonna start looking weird.
It's time to rethink the engine positioning really. They have to come in (go left) to work. I don't want to get them too close to me as I'll be sitting right next to one of them and although it's really no different than my race kart... I'm 2 inches from my clutch in it. Guard it well and we'll be fine.
So in with the rear frame pieces we go. From outside the main frame to 1" inside them. This gives enough room for the 38 and sarge size rear wheels to just clear the rear motor... plus it will line up nicely with the front engine mount, on the inside of the rail.
Sure, a few extra bars are gonna be needed here to make it work, but that's the fun. I've already cut off quite a few so we'll use them later.
Beer 2.
Now here we have something that lines up, could work and has enough room for everything to function, including a gas tank in the middle of them, level with the tops but enough to gravity feed them.
Anyway, the other pics show all that to chew onwhile I type up what's happened in the other 20 minutes I spent after that. It's amazing.