We offer a couple of different front mount kits. Low mount with intercooler for under 3900.00 and Hi mounts with intercooler for 4950.00. Either kit will work, the Low mount is for the person that does not want the turbo in the engine bay, and wants something a little different. Spool rates are the same.
Hi mounts no need for an oil pump, and we can put a much larger turbo on the system later in life when the engine can handle it...
With the 4.8 the 62-1 is plenty of turbo, but if you are planning to go to a 6.0L any time soon, I would recomend you get a larger turbo now and keep the boost LOW.

Drop a pm if there is anything I can do for you.

Rick