I have had both a 226bhp Raceline 2.0 and my home assembled 260bhp spec 2.3 so I think I can be objective. Firstly the 2.3 can and does fit into the narrow chassis, as Mic who has built several with great success can attest. As to agricultural, the 2.3 is hardly that, yes it is marginally less sweet tan the 2.0 as a revver, but it is a fair bit torquier. It probably weighs about 5-7kgs more due to a heavier crank and the extra 12mm of block height.
The 2.0 is great, in 226bhp spec it was under stressed, easy to live with and more than torquey enough to spin up my slicks in 3rd at the race circuit here. I actually think my 2.3 has too much horsepower, I never thought I would ever say that, but it is a monster on the track (and I come from a superbike background). Maybe I just don't drive it enough.
So given all that if I had a chance to do it all again, I would probably build a 2.0 to 250bhp spec like the one AMMO just did, as I think this would be a really decent combination of horsepower and torque. But then BYKer Will has tempted me towards the Pinto
Dubai Duratec SV