Hi tom its a v6 4.3 as my toy 4 cyl transmission went out and hard too get parts for,so i went too the v6 that i had extra trannys for. This is my heated hopper gasifier, i had too open the restrictor a bit, i notched my. Gasifier barrel around drive shaft and lowered the height 8" or little more from the bed of the truck. And the hopper gas cooler i would like too add later. Though as you say i dont seem too need it so far, though its winter time and the excess water just freezes in the lower tanks. So not a good test of water saturated gas performace yet.Hopeing it works good in hot summer, as thats probly when the hopper cooler helps the most. When i get time i will post some pics of my grate design and burn tube condition, though i need some dryer roads and hot summer too give a good hot test too the thin ss covering my ceramic blanket in the burn tube set up.I will have some pics of some componets later.This unit is just a test and trail gasifier from other than the dakota build, as it says its a test rig ceramic blanket gasifier with a heated hopper and since it is missing some easy clean out ports as max noticed, AND I DONT WANT TOO STEER ANY ONE FROM THE TRIED AND TESTED TAR FREE WK HWWT DESIGN.WHICH HAS MANY ADVANAGES FOR LONG LASTING AND COOL TOO THE TOUCH DESIGN, AND HAS NICE HEAT RECOVERY SYSTEM THAT HELPS KEEP THE EXTURNAL TEMPS LOWER AND RUN WELL ONCE WARMED UP HAS AN EXCELLENT TURN DOWN RATIO. IN FACT I WILL BE REPLACEING MY CYCLONE’s and useing the WK TYPE DROP BOX HEAT EXHANGER IN ORDER TO LOWER MY EXTURNAL TEMPS AND RAISE MY INTURNAL TEMPS FOR BETTER EFICENCY AND PERFORMACE OVERALL.SUMMER TIME WILL TELL ME MORE IF THE DESIGN IS ACTUAL TAR FREE UNIT DESIGN AND COOL ENOUGH TOO HAUL HAY.The walk around will have too wait tell i get things ironed out more like i want.OR A BETTER DESIGN. HOPPER HEATER IS CONSTRUCTED, HOPPER HEATER NEEDS TESTING IN HOT SUMMER, AND COULD HAVE BEEN FARTHER FROM THE HOPPER FOR EASYER TOO CLEAN. AND A HOPPER HEATER OF THIS TYPE DESIGN SHOULD HAVE EASY PROVISION FOR HIGH TEMP INSULATE TOO MINUMIZE HEAT LOSS.FOR MY NEXT DESIGN ADDED FEATURES IN MIND. THE BEST TEST OF VARIOUS DESIGNS IS ON THE BACK TIRES AND WOOD USE AT VARIOUS DRIVING USE’s Or speeds one drives, motor size and weight . GOD BLESS.