240 seats into 140
I did this years ago, into my 142, but I'm not very tall so the loss of height didn't concern me. The biggest problem was the resultant lack of clearance between the steering wheel and my thighs, and I'm not fat!
From memory, with a bit of hole slotting the 240 squab did fit the 140 base (necessary this way round as I didn't want to muck around with the floor fitment). However, another consideration - 240 seat adjustment is exactly the same place as the 140 handbreak lever.... Therefore I never adjusted mine after it was set.
Conclusion: as John said, it can be done but there are lots of restrictions and limitations unless severe seat re-manufacture is considered. I did it cos i hated the original vinyl ones and I had both available - a sort of investigation project one winter.
Paul
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