The GM motor mounts have no chance in hell of holding a Turbo V-6 torque monster. It's only a matter of time before they give out and you resort to an eyelet bolt by the alternator and a strapdown to keep the LC2 from torquing over. The driver-side mount gave out when I was running 12s. I'm pretty sure a new one won't hang with this engine. I'm avoiding future headaches by installing HRPartsNStuff's Poly Motor Mounts and Poly Trans Mount now. | 
The HR mounts work by incorporating polyurethane bushings-way stronger than the spongy stockers but not harsh. Laser cut and CNC-machined, these mounts are high-quality pieces that will handle 1400-plus horses. They bolt to the block with included Allen head bolts that are tougher than Grade 8 and lock washers, using a 3/8 hex bit and ratchet. They flex just enough to prevent stressing the engine-and I can finally toss that strapdown kit! | 
The S water pump hose and a new Kirban thermostat housing from Ron's Custom were installed-this housing is a much better design than stock. A 160-degree thermostat is used. |
My original transmission cooler and fuel lines have taken a beating over the last 19 years-thankfully, Classic Tube has direct-replacement stainless steel trans cooler (back) and fuel feed/return (front) lines. It's a godsend having lines that are bent right and fit well. | 
Junior puts the trans lines in the general area where they will go, then zip-ties them to the frame. The Casper's harness is zip-tied up out of the way, and the engine bay is finally ready for the Hartline V-6. | 
Junior hooks up the engine hoist and removes the bolts holding the engine to the stand. He wheels the LC2 into position, drops it down halfway, adjusts trans lines and wires like the cylinder head grounds, then eases the engine all the way down. He aligns the new motor mounts and slips their bolts through. |
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Now Junior and Alex go about connecting the new harness to the engine. The grounds that attach to the back of the head have some extra slack in the Casper's harness-Junior decides to attach them to the driver-side head after scraping and sanding the bolt hole to ensure a good ground. | 
With the engine in, we get the Dynotech trans ready to install. The Vigilante converter is filled with a quart of fluid, and then it is installed. You want to feel three clicks-it will slide in, wiggle it, turn it, click, turn, click, turn, click. |