I like Jolly and the fact that a small -almost- home based company has achieved so much and is a reputable name among the expansion chamber constructors.

I've used a set on my mc28, I wasn't really impressed but they had decent power and were very lightweight.

I reckon the minimum offer starts at about 150 GBP for every set of expansion chambers out there and can get way higher if they are in good shape-condition.
_________________
2t-racelab.com