I run that in my f104. It is very quick, however not much different to running a G2 so I agree that comparison wise they are ok.
I do think however that the F1's are going to be so much faster anyway even with a crap £5 540 tamiya silvercan. To put it into context with the F104 I set TQ with 20 laps in 306. In the final I ran litterally on the trim ( so maybe 1/8th trottle and still managed to win on I think it was 16 laps )
Would it be right to ask if F1's are not really suited to the clubman class?......