Quickboost provides you with one set of Vought F4U-5N flame dampener exhausts. Of note is the re-sealable packaging that Quickboost uses that makes the parts easy to review and then stuff back into the package securely. There are no supplied instructions; you simply swap out the kit provided plastic parts with the new Quickboost replacements. These Quickboost parts are specific replacements for the kit exhausts which replicate a standard F4U-5 without the flame dampened exhausts. If you wish to do a post-war F4U-5N that had its flame dampener exhausts removed for the standard F4U-5 exhausts, I would point you to the Quickboost 48 661 set that is gorgeous.
Quickboost has molded the exhausts perfectly in light grey resin with no apparent bubbles. The Quickboost exhausts provide you with no mold seams to sand off along with a hollowed out exhaust.