John, as far as tops go, if you were to entertain designing a different top. the design kellison used is really nice and sturdy. i believe vern offered it when he first started building cars...some where in his rats nest is the info and or mold for the bows.
it clipped on the rear with the MGB clips bolted into ferrules at the door, and over center clasps at the windshield. it looked similar to a triumph tr4 3 window top.
note: stallion owners would have interest in them if they were made like this
