Well after lots of sizing up, and the possible messing around, and the fact standard covers are a weird shape, i have sent the alloy spacers back to Summit for credit, and in their place i bought MOR-68323 valve covers [moroso].
Very, very expensive at $419.39 per pair [yeh really
] however they are made for the 94-95 engine, specifically fabricated to avoid the alternator.
I know there's cheaper that might do, or could do, or maybe do, but a 6G alternator is also an expensive alternative, plus wiring adapter and much lengthening of wires and soldering to get it together, plus the fitting.
This way i can get my car back on the road asap using all my standard stuff and the phenolic spacer, and i can guarantee it will all fit without tears. [or else]
Many thanks for all the input and advice, i never thought i would see the day where i should have bought all the stuff dependant on which valve covers fit.