looks good I just modded my 1977 Boneville heatercore today. but I did the fittings a little different, I used a 1/2" to 1/2" fnpt fitting then a 1/2" mnpt fitting to hose barb. that way I could sweat it to the hc with less worries about causing leaks and such. they stick out farther but hey maybe ill try something else later, ive got a couple ideas.