MadRat brushed to brussless conversion, How

[sprintir]

Convert MadRat brushed to brushless.
I’m sure this question has been asked before so apologies but this is all new to me.
I would be grateful for your feedback
I want to convert my MadRat to brushless setup
I was looking to see how much room (height)there is under the shell using shell as a guide for the ESC I measured approximately 33mm high.
A lot of ESC have fans attached but the height is greater than 33mm.
My question is can you get a different shell (can you get better shells which is stronger than factory supplied) that will allow more height and which ESC can fit this car.
I’m on a budget for an ESC, Motor & programming card I have looked on Hobby king web site and it’s possible some may fit.
Thanks Ian