Try hairy Bear on that cow.You will get a shot of lifeline[maine] and meyer 734[sim].If not that use an Angus bull for replacement heifers. I would suggest Beb Juneau,Jacee's Ramblin Fever,or even Northern Improvement.You could possibly get some real outstanding heifers out of the halfblood bull they call SOS.He mates up with everything and sires tremendous daughters.he is half SIMMY and half Angus.There will be some good suggestions I'm sure from others.If you want an honest opinion with 50 plus years experience,breed that cow for maternal strength and try and get some heifers to keep and then go for the gusto and raise some steers.Her lifespan is nearing the end. If she is really good I would use every bull mentioned on this post and get some future real world cows from her.