I do and my experience was overwhelmingly negative.
I called to put together a kit last October. The guy I talked to over the phone took all the info on my car and selected the components for me. I asked if everything was in stock and ready to ship and he said yes, it would ship within a few days. I wanted everything shipped to my house in Michigan before I came back for the deer season/Thanksgiving so I could take it back with me to Europe on my return flight
I get home and everything is there except the brake booster, which is on special order. This irks me because I cannot take it back with me for free as planned. Now I have to pay to have it shipped. The extra shipping and duty costs me $184. WHen I go to have the booster installed, it is the wrong booster. It is a booster for an old corvette and it is too long for the shock tower by a good 3 inches. MPB will not reship me a new one. Rather, they force me to buy a new one and agree to refund the money on the old one when they get it. They will not pay return shipping to the US on the incorrectly shipped item. I sent it back a few months ago with my sister, who was visting me on vacation. They ship the new one to me at my own expense, causing me to incur an additonal $204 in shipping and duty. I had to pay an extra $384 for my kit because of their mistake.
One of the worst companies I have ever dealt with.