Thanks for the help on here. Now that I know my current condenser is not a parallel flow unit I need to know the size. I contacted ackits.com and they said there are 2 ways.
1. Measure ( which is fine but I am not home at the moment and want to order it NOW!)
2. Anyone who ordered one before can pm the invoice # and they will pull it and duplicate one from those specs.
Anyone who has done this on an 85 300SD and has the info handy it would be appreciated. If not I can not get home and measure until I get home late tonight.
Thanks
Alan

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92 500E Silver 66k
82 Porsche 911SC 84K
68 Cadillac ( Gone Now )
03 Suburban Z71 200K
85 300SD 217k From Original Owner ( Dad )

maybe just me, but I would be worried about mounting tabs, port locations etc as well as OA size. dont be in too much of a hurry. unless you have someone whos already gone through the pain it would be best to measure twice and buy once.

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1982 300CD Turbo (Otis, "ups & downs") parts for sale
2003 TJ with Hemi (to go anywhere, quickly) sold
2001 Excursion Powerstroke (to go dependably)
1970 Mustang 428SCJ (to go fast)
1962 Corvette LS1 (to go in style)
2001 Schwinn Grape Krate 10spd (if all else fails)

Good advice and your right. I called them afterwards and he indicated that on their site they have a form that asks all the pertinent questions since they consider this a non-stock request. I have not heard back from anyone yet who has done this so I need to downshift and wait for the information.
Thanks
Alan

__________________
92 500E Silver 66k
82 Porsche 911SC 84K
68 Cadillac ( Gone Now )
03 Suburban Z71 200K
85 300SD 217k From Original Owner ( Dad )