Mine are fairly simple.... Bodies for 65/66 Mustang fastback. 69 Torino Hardtop, 61 Starliner, 67 Mustang Coupe, correct bed for the Firestone truck......ect
Retool a few older kit suspensions. (63/64 Chevy, 63 Galaxie, 69 Riviera, 66 Mustang. 73 Mustang, 72 Chevy truck ect)
All these mentioned and more could be done as new kits with parts from existing kits
My 2 cents