Not got my car done yet but it will be on Nitrous, My engine is a similar spec to what you have though and I'll run upto 100bhp on it

know plenty of people running similar specs locally with 100 shot without any problems whatsoever, occasionally as pointed out the clutch will let go if its shit and some people have broken diffs when launching hard but thats normal for a cossie anyway without nitrous.

Steve Bennet (therapidone) I think is the one to speak to, he has had plenty of experience with nitrous on his old Cosworth with good results,

Wouldn't really say Rod is a good person to talk to as his engine is far from standard and built to take much more than a bit of nitrous, Chip will without doubt know anything else you need to know I think