Got to be worth finding out your options Bob.
For added info, Monoposto has announced that
"The Formula Renault 2.0L 16V 2000 onwards car will cease to be eligible for any class from 1 Jan 2017
Note that the 95 to 99 8V cars will continue to be eligible"
http://www.monoposto.co.uk/2015/08/technical-update/So BARC (who had become the natural home for FRs) could be the only place the 16V cars run (and there should be loads of them shouldn't there?)
Mono only has one 16V running this year and only three 8v.
Also a bit 'left field' but a number of Jedi run in mono as well as the BRSCC having the series for them. Drew might comment from his 'former life' but I think that Champ is fighting to keep championship status and may be another option for CFF2000 as a class B.
You can get some good info on lap speed differences (dry and wet) from Castle Combe on Monday when Rodney Toft ran his 82 within combined Mono races.
http://www.tsl-timing.com/file/?f=CCRC/2015/153568mon.pdf.
Since the reverse of 'if it ain't broke don't fix it' is 'if it is broke then fix it', either CFF2000 is OK and rosy in its present form or it needs something a bit significant to fix it..... and number 1 of the fixes is making sure it actually has some races for people to enter next year.