This unit bolted right up to my 30 year old lift. The hydraulic fitting was different than mine, which I assumed would be the case. I could have gone to one of my local businesses that build hydraulic hoses, but I was in a hurry. My original fitting and the fitting in the pump were both steel, so I removed it, cleaned them both up, clamped together and welded them together with my mig welder. Worked great, not leaks. This unit is really quiet compared to the other 4 lifts in my shop. The price is really hard to beat. I can't attest to the longevity of this unit yet, but I think it is going to do great.
JW 
