Couple of quick ques

[T11MNM]

Having decided to make a real go of RX7 ownership (was playing at it before, haha) i\'ve noted a couple of annoying things with my car while trying to be a little more economical.

When i go over bumps i seem to get a slight knocking noise from the rear somewhere, it sounds like it\'s the left rear offside wheel but as I\'m sat in the drivers seat it could be coming anywhere from the left of me as I\'m sat in the car, i\'m going to jack the car up this weekend and take a closer look.

I\'m thinking a diff mount or something, anyone got any suggestions?

Also, under 2000 rpm the car has a tendency to lurch ever so slightly when i lift off, more noticeable when in a high gear coasting, so if i\'m doing 30 in 4th and lift off sharply it might lurch slightly before settling down, i was thinking perhaps an engine mount?

Again any suggestions welcomed, the car is up at WGT in a couple of weeks for a service so if i struggle to see the problem i\'ll ask Pip to check it out.