Terry, thanks for the response. Yes i like pics too, thats what i was hoping for in an idiots guide kinda way !!
was interested you mentioned adjusters and pedestals

the plan was to remove the driver seat And rails , see if the transit rails fit the volvo seat then bolt back on ?
if not, then use All the volvo bits, and adjust if needed, to fit the transit pedestal (over the battery)
with the passenger side, i figure the whole lot would have to come off at the floor? then get a new pedestal made up for the single volvo seat ?

Would like a swivel on this one, though cant afford one at the mo ( mind, my brain is swivelling )
So, would i have to make allowances in any new base to accommodate one? or were you suggesting doing it now just to blitz the lot in one go ??
Hope you dont mind all the questions. just like to talk it through before making a start .
hopefully some others might chip in too with ideas before next week, and i Will take Pics
Cheers again