where's the leak at? int he core or on a tank? neck? tube?
tank repairs are super easy.
SOME core repairs are ok, if you can get tot he damaged area without doing more damage AND if the core is not rotted.
if you have to replace it, the high density core is preferred.. but as expected will cost more.
many get buy with the lesser expensive common repop units every day. if you are limited on budget.. this will likely be a good choice.. again.. unless it is n easy fix and the rest of the radiator is in good condition.
easy to repalce.. just take the tin apart at the front. might even bea able to loosen the bolts at the rear tin and not take the side panels completely off. grill and nnose from 1 side will have to come off.,. doglegs from bolster too..e tc. if you can swing it.. do the thermostat.. and hoses, unless they are new/newish already.