on acceleration in any gear and neutral revin, a rattlein noise in region of gear box, only loud wen cold but still noticable wen warm. if its sunny and hot outside i cant hear it tho. cud it be gear box problem, maybe exhaust rattlein slightly, been told down pipe is insecure and up pipe is blowin. any ideas????? it drives me mad wen drivin.

 

solve the two problems you have already whcih may be the reason for the noise?