I purchased a seat foam kit for my 1972 240z awhile back and find it to be too stiff. Has anyone trimmed the foam to make it more comfortable and plush. I was thinking of taking about removing about 1 in from the seating area so that you will sit down in the seat more. What techniques have been used to trim this foam.

Seat cover fit might suffer. In essence, you'll be increasing the height of the side bolsters by 1 inch. The centre panel of the seat cover would end hanging in space above the carved-out foam. Occupant weight will force the cover down onto the foam, but the look (baggy) when the seat is unoccupied might make you wish you'd never tried it. I suggest that you run the idea by an experienced auto upholstery pro before you break out the carving knife

Dou you have any spacers in the mounting hardware that can be swapped to the bottom side of the seat mount?