[DanEC]

I think that his overall lack of organization and housekeeping in terms of documentation and service records would alone be a red flag. In my opinion there are really 3 areas of quality to be considered in a replica build - quality and engineering of the original kit, quality of the components for the drivetrain and mechanics, and quality of the assembly and fitment. You can probably find some other owners to comment on the kit quality and engineering, and you or another replica owner might be able to evaluate the assembly care - but looks like the mechanics are going to be a Forest Gump box of chocolate thing if you buy the car.