Can I put a radiator where the stock fan is on a Thermaltake V3?

[space55]

I have the following build currently built, as of yesterday, and I will really need to overclock higher than the stock fan can cool. ~4.5+ GHz. I plan on moving the stock fan to the very top of the case, and will install a liquid cooled CPU block where the fan was originally. I have two main questions:
1. Will the liquid cooling block fit with my motherboard
2. What is the best CPU cooling block for less than $50 for this kind of a job.

I just checked, the fan space is 120x120x25 in all spaces. How can I rig a radiator to work without taking my Dremel to the case?

Here is my current build:

Case: Thermaltake V3 Black Edition
RAM: Corsair Vengeance DDR3 1600MHz 2x8GB
PSU: Corsair RM 850
CPU: Intel i7 4770K
Motherboard: Asus Sabertooth Z87
HDD: Seagate 2000GB
SSD: Samsung 256GB
GFX Card: GeForce GTX 780
OS: Windows 7 Home Premium 64-Bit
Stock Fan: 120x120x25mm Blue LED Fan

Let me know if I am forgetting something.

 

[space55]

I've done some research.
My answers:
1. I will mount the cooling block outside the case
2. I am planning on the Corsair H50

If anyone has any better recommendations/cheaper coolers for a 1150 socket, please let me know.