[HKS_TRD]

If OT-122 is the fibreglass chassis and NOT the metal chassis, I do have one here I could sell.
Might have an upper deck too actually just need to go through all my stuff
I forget what the OT-103 is, is that the piece that goes over the motor and attaches to the belt cover, if so I reckon I may have one of these too, I need to organise all my parts ....

For belt covers just go with the Marwan repros, the chance of finding the originals is very slim and really not necessary as the LWB belt covers are actually clear anyway unlike the SWB cars which had the tinted belt covers