My bad, I forget that the 250 was available in the trucks too. That was my thought if you are going to go with a duajet and an integrated head, why not swap out a truck head which has the dualjet mount perpendicular to the engine allowing for the stock position of the cable. I'm also wondering if with the HD 292 trucks, they had the little half exhaust manifold with a 2.5" outlet too. My integrated exhaust has the same exit point as the older HD truck 292 manifold with three studs, but I presume it is 2". If that's the case, then the truck integrated head with dual jet and a 292 2.5" integrated exhaust manifold sounds like a decent daily driver build.

So is this going to be your grandson's first car in 8 years?