Made in USA! On Vintage Old School American made equipment! When good enough isnt good enough! We have had so many requests for a larger more aggressive XJ panel that we are introducing Our New XJ "Maximus" louvered panel as big as you can get and still avoid the front and rear hood brace. 136, 4" wide louvers provide 153 sq inches of heat exhaust!!! These really let your radiator and fans do their jobs! These Aluminum louvered panels have radius corners and mounting holes. They are made on a high tonnage press brake for much crisper stronger forms and larger deeper openings to really get that hot air out of your engine compartment (see photo). These are designed to be bolted on (with included Stainless Steel hardware) with the holes already punched. They are made from 16 Ga 5052 aluminum. The 136 louvers are wide and 3/8 tall to get the most hot air out of that engine compartment. Each panel is 20" wide(tire to tire) and 27" long(grill to windshield). Mounting hardware is included with 48 sets of 3/4" 1/4"-20 Stainless Steel Button Head Machine bolts with self locking nuts (you dont have to mess around with lock washers) We also include the 5/32" hex wrench! Please contact us for a quote on custom applications, larger or smaller panels, aluminum, deck lids.