Is HandyAndy still doing flat pack chassis kits? I've noticed that he hasn't posted for a couple of months (and I understand he has his reasons); I just don't want to bother him unnecessarily :)

Welcome PorkChop,

You don't lose that much to be honest. Saturn have flared the tunnel out by 62mm, so you're only losing 31mm either side.
It's particularly noticable on mine as my seats are a bit on the wide side and only just fit between the rails, if they were an inch narrower it wouldn't be a problem.

Cheers for the welcome.

That sounds good; really good :D It's making it increasingly likely that old 5 bits might find a new home...I'll wait until the plans are up on the SSC site and look at the dimensions before committing to a particular spec :)