Hello everyone. For an '89 240 how hard is it to remove the instrument cluster to gain access to the back of the clock to add a tach? I might also add the IPD white face gauges. Would someone be kind enough to give some instructions. I have the Haynes manual but I was wondering if I should take it to the mechanic or if it is job I could do myself in an hour or so. Has anyone else done this before? Are their any trick involved? What should/shouldn't I do? Thanks in advance. Joe