some pictures on how i did it. I used the existing side mount holes and mounted a frame that i could bolt the jag seats to. If you decide to do the same i have a wiring diagram for the jag seats. just need a positive and a negative all the rest is in the seat controller box, forward, reverse, up - down front - back tilt rear of seat and lumbar support pump (lumbar support is via an inflatable air bag). The seat heaters are on a separate circuit.

seat belt bolts are on the jag seat chassis just like the mercedes - same thread and bolted straight on. I attached the mercedes seat belt button / anchor to the jag seat belt anchor stalk

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61 Austin mini
67 Lotus 7
74 450sl
76 Cadillac 8.2l (501 ci)

some new cars

megasquirt conversion on:
djet 74 450sl http://www.mercdjetmegasquirt.britautorepair.com/
cis 76 450sl http://www.merccismegasquirt.britautorepair.com/

the best view is always from the point of no return