The honda engine mounts are surprisingly simple and i have a set that i've drilled the spot welds off to remove,the actual rubber/poly mounting is all on the engine side on the hondas with just the bracket being attached to the shell/chassis,i'll strengthen the n/s/f of the clio shell and attach the brackets in the correct place all welded up and solid.
I've had a decent DC2 hence where the conversion package came from as i smashed it unfortunately,although i would rather have it in a clio shell to be honest.
I would love to convert to RWD and although not this time around i will do at some time in the future i'm sure,i wouldn't use the B18C6 though i would probably use a C20LET as i've used these engines in the past and have converted a manta to 2.0 turbo using this engine and loved the results,however a lot easier as already a RWD car and not a conversion from FWD