348 challenge track car

My thoughts, for whatever they're worth:
My former track day car was a lightly modified GT4- it was pretty bullet-proof and a lot of fun, but slow. Biggest problem- avoiding oil surge under hard cornering, the only definitive solution to which is a dry sump engine (I used a 3-qt. Accusump which mitigated, but didn't solve, the problem).
Bought a very nice, unwrecked (that's very rare) 348C last year and eventually sold the GT4- if I ever get it properly sorted I think it'll be a lot of fun. My reasons for buying it, rather than a 355C, were that it: (1) doesn't have power steering (which I despise); (2) seemed likely to be cheaper/easier to maintain (which hasn't necessarily been the case thus far, but hopefully that'll change now that the car finally seems to be sorted out); and (3) had a title so I could get a tag for it (at least in States that don't have smog or safety inspections)- only US-version '95 355Cs have titles.
A 355C is much faster, and a lot of bang for the buck, but if you intend to drive to/from the track (feasible, albeit somewhat masochistic) the pool of good '95s is pretty small. Most Challenge cars, at least those actually raced, are less than pristine, and nearly all have had a big crash or three, so check these cars carefully.