Valuation wise if it's in bits and needs a rebuild maybe £150 at a big push?
It's a stroked 998 and they are at most worth may £150 if complete and sitting on a box.
The difference between the 998 and 1098 is the crank and pistons. Rods are the same. A viable, cheaper alternative to a 1275. You'll have more power than a 998 in standard for and with a decent head and cam you can expect in the region of 70bhp. These engines are increasing in value so I think £150 is on the low side.
Well, at least I'm the only person to actually put a valuation on it?