LS4 Performance - LS4 engine+transmission prices

wondering what a fair price is for an LS4 the aluminum 5.3 and the automatic 4t65e-HD transmission.
Anyone recommend a place that has take outs/ drop outs with the engine trans computer and wiring all together.

thanks

Lkq I believe a motor is around 1500 without core .

I've never dealt with these guys. But it looks like a good place to start.
http://www.ebay.com/itm/LS4-Short-Block-Engine-Motor-5-3L-GXP-SS-V8-5-3L-21k-/390128678504?hash=item5ad57b3668&item=390128678504&pt=Motors_Car_Truck_Parts_Accessories&vxp=mtr#ht_1318wt_689

AA MIDWEST core suppliers in Chicago give them a call they should be able to hook it up, LKQ stinks just another giant corporate company