Sorry for the delay guys. I was trying to get some pictures on last night but that just wasnt in the cards. The shipping business is relentless. I did how ever make a disappointing discovery. The boiler system is set up to pull the water through the system SO....I have the hx plumed into the hot side coming out of the boiler, not the cold(return)
I did measure the hx its 48" x 3". I had been happen with my dealer up until last night when I got the bill for my hx. I had called 3 weeks ago and told them what I was doing and that I needed a hx for my system. Was told that was no problem and they would ship on out to me. I get the bill yesterday and its $760! That included shipping but holy smokes! Does that sound like a fair price to you guys selling this stuff? I will work more on some pictures tonight, thanks for the continued help here guys 
Ayuh,... Dependin' on how the system it plumbed up, that may not be that bad,...
If yer tryin' to move the heat to the house, it don't matter so much...
If yer tryin' to use the gas boiler as the distribution block, Ya, that's Bad, as the hot water would need to go through the house 1st, loosin' all it's heat...
I still say, if the OWboiler is capable of bein' a pressure boiler, I'd go back to the way ya found it...