my Bongo is in the garage for a slight leak at the moment, but once it was up on the ramp and the rear heater matrix hose waggled coolant gushed out

It has now been bypassed but I was wandering if its worth replaceing the matrix or just leaving it as it is ?
I can get a new matrix from ebay for £70 and fit it myself then just need assistance bleeding it, prob get the garage to do that bit !
Any advice on whether to change it or leave it, not used the bongo over winter yet so dont know if the rear heater is useful or not?
Cheers
Tony