I've got my frame cut to 152'', my front spring mount is in stock location and my rear shackle mount is mounted on the rear crossmember. I'm running trail gear 5'' springs front and rear, when I pull a tape measure from pin to pin on front and rear springs I have 104'' wheelbase. Is this ok or is it to short for a f-toy.

Comp rigs seem to be 103 -106"

I'd say your good. Mines at 105" and works for me.

Your just fine. shorter helps in the comps. I built mine for trail riding and it's at 106".

I went ahead and set the tear shackles under the rear crossmember and ended up at 102''.