Hi guy's !
I noticed in your engine/frame mount that you mentioned that Big Blocks were moved to the passenger side by 1".
This is actually only 1/2". If you measure from the carburetor stud to each fender you should get approximately 24 3/4" driver's side and 25 3/4" on the passenger side. The difference in your measurements is 1", but the engine is only moved off of center 1/2". (1/2" offset)
Example: Distance from center to each fender = approx. 25 1/4 " Add 1/2" to driver's side =25 3/4". Subtract 1/2" from passenger side = 24 3/4"
This 1/2" offset matches the transmission crossmembers 1/2" offset . The transmission crossmember also moves the transmission mount 3/4" forward of the small blocks location.
The BB engine frame mounts also move the engine forward that 3/4", also.
Thanks Guys !
Tom