Fernando,
Since you removed the IC stuff (I assume motor mounts too) you will need to decide if you are going to go with a front or rear mount motor. I have used front mounts on all my ships with very good results, others have be equally happy with the rear mount. With either arrangement you will need to install a strong firewall/mount that should be at least 3/16" plywood. To this you can bolt the motor direct or use the X mount that comes with most motors. When you install the firewall/mount I recommend that you install at least two small wood screws from the fuse sides into the firewall/mount as well as strong epoxy glue. Another option is to buy a motor crutch from Tom Morris (Tom's Building Service, Phone 256 820-1983, E-mail ctmorris@cableone.net). Tom's motor mount crutches are front mount in 1 1/2" and 2" diameters will fit most popular motors.
Next you need to settle on a battery selection. If the ship is a 46 size you can go with either a 4S1P 3300 or a 5S1P 2200, check the weights for the brand you want and pick the lightest pack. For a 60 size ship you need either a 4S1P 3800 or 5S1P 2700 mah pack again for the brand you like pick the lightest one (I have used the Thunder Power Pro lite packs).
Next, pick your motor - 46 size would be similar to an AXI 2826-10 for 4cell, AXI 2826-12 for a 5cell. For a 60 size you could look at the E-flite 32's. With the five cell pack you could also use the AXI 2826-12 for this size if the ship is built light (<65 oz total ish).
The ESC I would recommend the Castle Creation 50 lite and a FM9 timer from Hubin. Check at the top of the Forum for the setup guide for the ESC.
Best, DennisT