i had a Rx7 i think it was or supra oil cooler on mine when i first built my b16 a while ago when i put ac in the car it was a front mounted oil cooler like a tiny innercooler it worked very well took a extra 2Qts of oil had it on there 6months when took off it was clean as day i put it on never thought about it lowering pressure but it most have with my many feet of hose but never hurt anything if you need it you can have it i dont have the hoses or fittings anymore tho