Crosman model 160 reciever scope mounts

Ever since I began restoring my Crosman 160 Pellgun, I've been searching high & low for some kind of scope mounts to fit the unique stacked tube design of the receiver/gas tube assembly on the rifle. Through a forum reply on GTA.com, I got Ron Robinson's email address & began an email conversation with him, including pics back & forth. He sold me the last set he produced, in his latest design update. From his own personal stash, no less! Then, some of the guys on the Facebook air gun pages seeing pics of my 160 asked if I could get him to make more of them. He instead sent me a link to the site that sells them. But they're available in stainless only, as you see in this pic of my restored 160 Pellgun;
IMG_0251.jpg

​And the site link; http://www.kwiksitecorp.com/p-295-reversible-see-thru-grooved-receiver-mount.aspx
​These mounts look like they should fit models; 160, 167, 180, possibly (140?). The lower part of the mount fits 3/4" diameter receiver of the models mentioned.