thanks for the replies, love the car Rich!
have been doing a fair bit of research contacting different suppliers across the pond, and it seems that the sealed pods from the likes of Depo and Corvette Mods only have an up and down adjustment for the lights/beams, but being projector lights the beam pattern is different to a standard reflector lense so I assume all is ok, but then somehow the lenses of the projector lights have a plate in them to give off the beam pattern for right side of road driving, so still no guarrantee of an mot pass over here.
I think Ive come up with a way of replacing the seized adjusters by using some nuts and bolts and a bit of careful tig welding, Ill try it out today, if that works it opens up all sorts of options, mainly being able to keep pop ups, but going for smaller projector lights, as with the 4eyec design, but using lights made for uk use to give correct beam pattern.
out of interest I find that the standard light lenses for USA cars were made from plastic, euro spec cars from the factory came with glass lenses as euro laws being stricter on headlight beam pattern, but still made for right hand side road driving, a good suggested upgrade is to replace standard lenses with the euro spec glass ones, and are best part of $500 a side?!!