Sam
Well, I think if you experiment a bit you'll do it.
I just noticed that you're new to the forum. Welcome! Post up some photos when you can! I'm not so far away (West Yorkshire) and I'm doing up a 164.
I made some new seat mounting frames to fit Mazda sports seats in mine. At first, I trial fitted them on the original Volvo rails, but they ended up too high, so I made the new frames. Some pics on page 4 of my project thread, but the car is still in bits and I don't have any "seats installed" photos.
http://www.volvoforums.org.uk/showth...t=60815&page=4
I look forward to hearing more about the 144!
Cheers
John