As far as I know, they are the same intake. I base this on the intake on my 59 223 is the same as the 65 223, one of many as we race the motor at El Mirage and Bonneville. And we are allowed to use the 65 223 as it is the same block as the first year 54 223. And you might check with the aftermarket and see the year that their intakes will fit.
Sure its a 223? or do you have a 262 truck motor? I believe the only differences between the 221,223, & 262 is the bore. Truck has a different water pump. but you could ask here also... http://fordsix.com/forum/viewforum.php?f=18&sid=49d5de9d2b70cd927dd6c3cca54d3033
Ok guys, gotta second question. What years/ models (truck) of the 223 have interchangeable exhaust manifolds?
All ford 223s are interchangable. 6=8 has a nice split tube header available since fenton cast headers are near impossiable to find for the 223 i6 ford. Chevy its a mail order deal.