saturn dash bottom edge?
 

does the bottom edge of a saturn dash comply with iva regs or do i need to extend mine.
it has a radius but finishs at 90deg in a J fasion

It needs edge trimming, and the passenger side will need boxing in for iva.

I was unsure about the bottom edge of the dash so I extended it into a full 180 degree radius. Also the center section of the dash did not meet with the top of the transmission tunnel so I extended that at the same time.

Boxing in the underside of the passenger side is not necessary for IVA. Gus didn't on his. All they made him do was add a piece of rubber U-trim to the return lip on the scuttle as it overhung the top rail.

depends, if there is wiring under there

Gus did have wiring but it was neatly wrapped so not likely to get caught by a passenger