13-07-2020, 09:23 AM
On my Cheapskate special I made a top plate from a gib head key I “found” at work ( big one from steelworks equipment) The hole in the floor was a slot which allowed access for quick removal. The bolts were something like 3/8 high tensile from my collection. Bottom plate was standard A7 I think. Cost nothing. Rear spring u bolts were not available at that time.