What mods did you do to make yours LT1 specific?
I built one from scratch.
The off the shelf ones won't clear the cowl on a b-car, F-car is worse as I'm sure you know.
I made a plate to bolt to the intake where the TB bolts to, put a bar to the back, and made a u-shape "yoke" kinda thing to go over the back of the intake and clear the EGR valve. From there, two short pieces of chain go to the back of the heads, and clear the steam pipe. The main balance bar sits about 1/4" above the ribs on the top of the intake, and the lead screw is on the side, instead of the top to improve clearance. I had some 5/8" all thread laying around, threaded the inside of a piece of tubing, and welded it to a piece of square tube slightly larger than the outside dims of the balance bar. I took some 1/4" plate and made a hanging ring...
Worked awesome in my Caprice. I have some ideas to reduce the height of it in the back more. If I remember, I'll snap a pic of it tonight.
Theoretically, you could just mount a carb style lift plate to the 4 M6 holes that hold the fuel rail down. The fasteners have the tensile strength to lift several times more than an LT1 and trans weigh, and there is more than enough thread in the intake casting..... but I dropped theory in and made something I am more comfortable with

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Not quite 1000 words, but I don't have a pic handy.