Check out the "facts and figures" section on JMR's web site
www.johnmaherracing.co.uk
He's got all the specs on there for various setups.
All BHPs are as tested on his dyno and all 0-60 and 1/4 mile runs are as timed at the strip. He even gives you the gear ratios that were used.
Generally a top site. His performance guide makes very interesting reading also. Well, it did until I lost my copy!
I'm currently in the same boat as you, I can't decide what engine to go for. I've got a deposite down on an engine - just don't know which engine. Started off as a mild 100hp 1776 but know upto a 150bhp 2110. Better get it built soon - any more time thinking about it and it'll be a 500bhp 48v V12 - he he.