Motor Mounts

My 95 4.3 is due. I did some on another 95 and it was an all day job due to access. Does anyone have any tricks to getting to the mounting bolts? Also have a problem with rough and dropping idles speed issue in drive. Any tips on where to start?
Thanks

Can't offer much about the motor mounts, mine needs 'em, and trans mounts too but haven't done them yet.
As for the idle, if there is no SES light and code, then it is either fuel related, vacuum related, or ignition related.
Try starting with the vacuum hoses, pull each end of every one of them and look for splits. They should fit tight, if they don't replace them.
Check the PCV valve, if it's never been replaced and looks dirty inside, replace it, even if it still clicks when you shake it. Check the PCV hose fitting at the throttle body. These tend to get gunked up. If it is restricted with carbon or oil deposits it will effect your idle.
Check your fuel pressure, should be running 12 to 14 psi for a tbi. Try replacing the fuel filter if the pressure is low. If it's never been replaced, I'd do that low pressure or not.
Decarbonize the engine with some seafoam. Go to seafoam's website you can read up on how to do it. My recommendation would be to use the pcv hose - you'll know what I mean after you've been to their website. Seafoam is good stuff. One pointer, get a longer piece of hose from an autoparts store of the same diameter and put that on the tbi fitting for the pcv hose. This makes things much easier since you can hold the can outside the vehicle and suck the seafoam into the engine.
Or short of putting the seafoam directly into the engine, it can also be added to the gas to clean the injectors. Instructions are on the can.

And then there's the old fashioned tune up - spark plugs, wires, distributor cap, and rotor. If this has been done recently, check the plug and coil wires at the distributor for signs of arcing to metal on the engine or the foil underlining of the engine cover. If arcing has occurred for a while you will see burn marks on wire insulation, or in the case of the foil, burn marks or pinholes in the foil.

How's that for a few suggestions?

One thing to check is the vacuum lines, make sure they are all in good shape. Pull each end of each hose and inspect for splits. Check the fitting that the PCV hose connects to. Make sure it isn't gunked up.
Also another typical culprit is the EGR valve. Pull it and make sure it isn't stuck due to carbon build up.