Large heatercore idea

I used this link to find heatercore Z-765 but i put it in the search and it isnt coming up....anyone know what car it is from?

http://www.pullmanford.com/heatercores/heatercoreinline.asp

Dimensions:13" x 5.5" x 1.625"
So 120mm fans are 4.728"^2...soooo if you lined 3 widein a row

that would come out to be 14.184" wide ...so youd have roughly 1.184" hanging off the sides.....so if you lined 6 120mm fans using the push pull method...(3 per side) would this provide significant gains over a 2 120mm push pull heatercore set up or just be a waste?

Use the same site to find the car. There's a link that goes to this page here:
http://www.pullmanford.com/heatercores/xref.asp
Put in the reference number and it should spit out the make/model/year etc.

i did that and it isnt working

Core Number Years Make Model
2-765 80 Mack CS-SERIES
2-765 80 Mack M-SERIES
2-765 78-86 Volvo Trucks F-SERIES

It is actually for (two)-765 not Z-765

http://www.pullmanford.com/heatercores/2-765.jpg


Good luck going to napa in a (enter your car here) and ask for a mac truck heatercore