Thanks for the info regarding the other installs. Sorry for the bashing impression, but that was what I was gleaning from the prior replies. I replied to offer info and it seems like every other post had something bad to say about my setup. I agree the rear mount is not ideal for max power, but it was right for what I use it for and I'm happy with it.
On the Mustang, I see the whole front end is off, how much work (cutting & modifying) is involved here and what does it look like when it is together? I know these cars are less costly and easier to add a front mount to vs. the GM F-car. I used a Fox body turbo header as the template for my LSx single turbo install on the BMW (the port spacing is nearly identical to the LSx heads), and easily modified their crossover pipe to work with my motor. The hot pipe setups for these are far less costly than the ones for the GMs for some reason. Here are a couple of pics of the test fit of my Garrett turbo to the BMW:
The LSx motors seem to respond much better to forced induction than the prior models. In the Will Handzell book about High Performance mods to the LSx motors, a place called Wheel to Wheel made a huge amount of (flywheel) power (like 600 HP) on a 4.8L truck motor at only 8 PSI. The only mods were 42# injectors and increased fuel pressure.
The GM car depicted has an LSx motor in it. Looks like a good install in that I see an AC accumulator and PS reservoir. Looks like a decent amount of inner fender area cutting to put the turbo where it is. Minimal cutting for the upper radiator deflector and relocation of the battery. I checked the sourced website & see while they make a twin turbo setup for the LTx kit for the Impala, they do not offer anything for the LTx F-body.
As far as spending the money, with the turbo, pipes, wastegate, FMIC, EBC, etc. I probably have (had) around $2K in it, paid for as I could afford it. Those kits start @ $5K, more than I can afford in a lump sum.
I love the 4th gen F-body styling and performance, but find it funny that the same engine and transmission fits into a 20 year older Datsun 280Z much better than the car it was "designed" for:
1995 Trans Am:
1975 280Z w/ original motor from above TA: