Steve, Welcome, so what do you prefer? With a name like yours, i would say your Suzuki GSXR (is it a 600,750 or 1000?) 150bhp Galaxy? So what are they like? That will be my choice as the next car (plus a motorbike!!), when the current one is due for a change. Anyway back to your problem - sounds like the engine mount as gregers says. 1000 k1 the best and the orginal, checked the engine stablizer bar all seems ok, and of course as the noise comes and goes in the garage the noise is not there now, sure it is the dual massfly wheel as i have over 30 caddys in a fleet i look after and ever single one has had one bloody silly idea guess got to wait for it to develop more regards steve