Re: 1990 lx fox streetrod
Well... since your engine is carbed, wiring is quire easy. If it hasn't already been removed, you can remove ALL of the harness form the EFI system. It is totally separate from the rest of the wiring for the car. In the remaining wiring in the engine bay you can find the hot wire from the the key. This will fire your distrributor. Other leads for oil pressure and water temp you may want to run yourself to custom gages.
As far as vaccum, I don't quie know why you are worried about it. You can pick up a vaccum source from your intake manifold and run a vaccum line to your vaccum distribution block. That's waht I did on my '89 and everythign works great.
Hope thi shelps, John
'89LX, 347 Probe forged stroker kit, Victor Jr. head & Edelbrock F28 dual quad (500's) intake, TKO 500 with Centerforce D.F. Clutch, 4:10/8.8, MSD ignition, Crane cam, BBK 1 5/8 long tube headers.