Here is some information someone may find useful.
When I went with solid mount on the engine and transmission I got rid of the bug pack mount and went with the (SUS-06121 Bus Mount, Over Baja Bug Style, Uses Frame Horns) from Kartek.
Engine:
I added a supercharger to the engine and should put 280 bhp + to the rear wheels (300 at the crank). Parts needed: Supercharger from the Ecotec 2L, intake manifold from the Ecotec super charged 2L, gaskets, alternator stand off bracket with idler pulley, 60lb injectors, supercharger pulley (I changed to adjust the boost), heat exchanger for the intake manifold (nothing special needed), coolant pump for heat exchanger, dip stick and tube from the super charged 2L, 2 bar map sensor, adjustable fuel regulator (Fuelab 515c is designed for the supercharger and auto adjusts for boost) , and some miscellaneous parts. ZZ Performance has most of what you need as well as CBM. ZZ Performance offers a kit if you have no interest in shopping around. Tim as ZZ knows the Ecotec inside and out. It can be difficult to catch him so leave him a message or send him an email, he will follow up.
I changed the stock balancer to an ATI balancer. There were two reasons for the change. One was the diameter is wider than stock. With this change I was able to increase the boost while maintaining a larger pulley on the super charger. Note: when you go with a smaller super charger pulley to increase the boost you also decrease the life expectancy of the belt. Second, it was strongly suggested I make the change to increase the life expectancy of the engine.
I picked up a real nice header off of ebay (CHEVY COBALT/HHR/ION 2.2/2.4 L61/LE5 NON TURBO ECOTEC STAINLESS EXHAUST HEADER)
http://www.ebay.com/itm/260885563145...84.m1497.l2649EFIHarness sent me the wire harness with the stock ECU. For my application it was better to get the stock ECU and have it dialed in at a local tuner. Steve with EFI Harness supplies most of the desert racing community with the electronics. He offers a custom built wire harness, stock ECU as well as mefi 4 and mefi 5. My set up cost $995.00. You can strip your harness down and use your own ECU and get it done for a fraction of the price. I personally think it was worth the $995 because I don't have the time and Steve's harness is done extremely well.