On my Suburban, I'm planning on fixing my previous mistakes from my last transmission cooler install and make some upgrades in the process. So, when I originally put my auxillary transmission cooler in, I took the engine cooler out of the mix. Now, I realize that the aux cooler can't handle the entire cooling load. So, I'm going to put the factory cooler back in the loop, change out the aux cooler for a bigger cooler, and add in an external transmission filter. So, that's decided. My question comes in on how to plumb it all up. As it is now, I'm using rubber Automatic Transmission cooler line all the way from the transmission and cooler, and haven't had an iota of trouble. I still intend to go this route on the new setup. However, I'm trying to figure out how I want to interface with the radiator cooler now. I can go all the way to the radiator with the cooler line, but since it's rubber, it wants a pretty wide bend radius. I still have the original transmission lines hanging off the radiator. On my bronco, the previous owner put a cooler in and just cut the hard metal lines, slipped the cooler hose on, and hose clamped it in place. Doesn't look great, but it apparently does the job. So, I want a nice worry-free line setup that isn't going to get in the way too much. Should I just cut the hard lines going up to the radiator cooler and splice in my rubber cooler lines, or should I go all the way to the radiator with my rubber cooler lines? At this point, I'm leaning towards splicing in, I'm just worried about ATF leaks.