Beat Hardtops are available in Japan. Mugen ones are around the £1400 mark. but the difficulty is getting one over to the UK. Its ok if you import a car from japan cos the extra expense of getting the hard top here is covered. but to ship a hard top over would be very expensive, IF you could find someone to do it.
It sounds as if your mirrors have had the frame inside broken and probably bodged back together. parts are not available to replace. only new complete mirrors. These are around the £140 mark each. (I work for a Honda dealer and can supply these)
Im trying to get a couple of mirrors via contacts in japan, but its taking a long time.
HTH
Steve M
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Its all gone Norfolk!!!
Now in the Lotus position.